wined3d: Get rid of the oneToOneTexUnitMap field.

dlls/wined3d/device.c

@@ -1819,7 +1819,6 @@ static HRESULT WINAPI IWineD3DDeviceImpl_Init3D(IWineD3DDevice *iface, WINED3DPR
             This->rev_tex_unit_map[state] = -1;
         }
     }
-    This->oneToOneTexUnitMap = TRUE;
 
     /* Setup the implicit swapchain */
     TRACE("Creating implicit swapchain\n");

dlls/wined3d/wined3d_private.h

@@ -727,7 +727,6 @@ struct IWineD3DDeviceImpl
     DWORD                     texUnitMap[MAX_COMBINED_SAMPLERS];
     DWORD                     rev_tex_unit_map[MAX_COMBINED_SAMPLERS];
     BOOL                      fixed_function_usage_map[MAX_TEXTURES];
-    BOOL                      oneToOneTexUnitMap;
 
     /* Stream source management */
     WineDirect3DVertexStridedData strided_streams;